I remember this happening twice very vividly. A major car crash where my seat came off the frame and I hit the air bag (which my thought was “this air bag doesn’t hurt”). Also when I was 10 or 11 and I was thrown from my bike at 15-25 miles an hour (which my thought was “this is going to hurt”)
During both of those events it was as if time slowed down and was running in slow motion. The event with the bike allowed me to curl into a ball and roll with the fall.
This also happened more than a few times when I played football in high school but nothing like the dangerous events noted above.